I used to play football for Real Madrid, and to be on stage for two hours, I can tell you it takes the same amount of strength.
I have discipline, I look after my voice.
You try to avoid the mistakes you made in the past.
I've played a lot in Las Vegas in my life.
When you get to the 35-year mark in your career, you make albums for your fans to love you more, so they don't forget about you.
You retire when you are sick and when you can't do it any more or when the public retires you. That's the most painful, because that's the one that leaves you wanting to accomplish more.